Select 32-bit iSeries/pSeries J2SE 5.0. As of writing this, the latest version is SR4. I'm not aware of anyway to detect what version is installed so just make a mental note of the service release number in case an update is needed for later. Yes, you will need to register to download this and yes, its a pain. When you finally reach the download page, download the .TGZ version of the JRE.

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Select 32-bit iSeries/pSeries J2SE 5.0. As of writing this, the latest version is SR4. I'm not aware of anyway to detect what version is installed so just make a mental note of the service release number in case an update is needed for later. Yes, you will need to register to download this and yes, its a pain. When you finally reach the download page, download the .tgz version of the JRE.

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On the Kurobox, create directory /opt and do a chmod on it

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# mkdir /opt

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# chmod 777 /opt

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Upload the .tgz file into the /opt directory and then do the following:

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# chmod 777 /opt/ibm-java2-jre-5.0-4.0-linux-ppc.tgz

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=== Java-Package ===

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When you do an apt-get install java-package, you will get the latest "stable" version which is 0.24. Unfortunately, 0.24 is not able to make a Java 1.5 .deb file from IBM. (Specifically, the ibm-j2re.sh file does not have the parameters for it). Go ahead and get [http://debian.lcs.mit.edu/debian/pool/contrib/j/java-package/java-package_0.28_all.deb version 0.28]. ([http://archive.ubuntu.com/ubuntu/pool/multiverse/j/java-package/java-package_0.27_all.deb Version 0.27] works as well.)

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Upload to the Kurobox and do the following as root:

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# dpkg -i java-package_0.27_all.deb

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or

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# dpkg -i java-package_0.28_all.deb

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depending on which one you use

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You can verify the version of java-package you have installed by typing

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# apt-cache policy java-package

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Should look something like this:

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java-package:

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Installed: 0.27

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Candidate: 0.27

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Version Table:

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*** 0.27 0

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100 /var/lib/dpkg/status

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0.24 0

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500 ftp://ftp.dti.ad.jp stable/contrib Packages

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Remember that java file we downloaded from IBM? Java-Package does not recognize the file name that IBM gives it so we need to rename it to a more general name that it recognizes.

At this point one could just and make the .deb package and see if it will work. However, there will be a plethora of warnings about not being to able find paths of various packages. So, to satisfy the make process without any warnings, install the following:

It's been said on another [http://www.debianhelp.co.uk/debianjava.htm Debian help page] that the warnings mentioned above may not necessarily be a bad thing. As long as the .deb package is created, it ''should'' still work.

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== Making Debian Java ==

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Make sure you are not root when doing this next step. In the /opt directory type:

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# fakeroot make-jpkg ibm-java2-jre-50-linux-ppc.tgz

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Be patient, it will take some time for the Kurobox to create the .deb package. If all went well, there should be a new file called '''ibm-j2re1.5_1.5.0_powerpc.deb''' in /opt.

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== Install and Verify ==

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As root and still in the /opt directory type:

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# dpkg -i ibm-j2re1.5_1.5.0_powerpc.deb

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The .deb install doesn't take very long. Once you have a prompt back type the following to make sure you have 1.5 installed

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# java -version

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== Multiple Versions Installed ==

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If you have multiple JRE or JDK installed (e.g. 1.5.0 and 1.4.2) and want/need to switch between them, you can use update-alternatives to do so.

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Example: Choosing which java executable to use:

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# update-alternatives --config java

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Example: Choosing which javac executable to use:

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# update-alternatives --config javac

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And so on in that fashion for the remaining executables related to Java. You can look in /etc/alternatives to see what one can configure with update-alternatives.

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== Removing Java 1.5 ==

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=== Must Haves ===

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If it ever comes to where you need to remove Java 1.5, issue the following command:

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==== test ====

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# apt-get remove ibm-j2re1.5

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The the following packages may or may not be needed. BUT, if you don't install these, there will be butt loads of warnings / errors during the making of the Java 1.5 .deb package. I do recall when following the steps for creating a .deb package for Java 1.4.2 ([http://linkstationwiki.net/index.php?title=Articles/DebianJava see here]), there were several warnings / errors as well. And for my purpose, it still worked fine. So if you are one of those that don't want to see a barrage of errors marching by on your console, install the packages in this section.

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== Knowledge Well ==

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https://help.ubuntu.com/community/Java

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== Install Key Packages ==

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http://www.debianhelp.co.uk/debianjava.htm

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This will install some of the basic things to assist in making life a little easier when dealing with Debian.

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* Install Key Packages which can be found [http://linkstationwiki.net/index.php?title=Articles/DebianKeyPackages here]

Assumptions

Needed Files

IBM Java for PPC

Select 32-bit iSeries/pSeries J2SE 5.0. As of writing this, the latest version is SR4. I'm not aware of anyway to detect what version is installed so just make a mental note of the service release number in case an update is needed for later. Yes, you will need to register to download this and yes, its a pain. When you finally reach the download page, download the .tgz version of the JRE.

On the Kurobox, create directory /opt and do a chmod on it

# mkdir /opt
# chmod 777 /opt

Upload the .tgz file into the /opt directory and then do the following:

# chmod 777 /opt/ibm-java2-jre-5.0-4.0-linux-ppc.tgz

Java-Package

When you do an apt-get install java-package, you will get the latest "stable" version which is 0.24. Unfortunately, 0.24 is not able to make a Java 1.5 .deb file from IBM. (Specifically, the ibm-j2re.sh file does not have the parameters for it). Go ahead and get version 0.28. (Version 0.27 works as well.)

Upload to the Kurobox and do the following as root:

# dpkg -i java-package_0.27_all.deb

or

# dpkg -i java-package_0.28_all.deb

depending on which one you use

You can verify the version of java-package you have installed by typing

fakeroot

# apt-get install fakeroot

Nuff said

Preparing the Kurobox for brewing Java 1.5

At this point one could just and make the .deb package and see if it will work. However, there will be a plethora of warnings about not being to able find paths of various packages. So, to satisfy the make process without any warnings, install the following: